Compare md5 checksums of files rather than files themselves, as it's far faster for large files (like logs).
Compare md5 checksums of files rather than files themselves, as it's far faster for large files (like logs).

git-svn-id: afc9fed30c1a09d8801d1e4fbe6e01c29c67d11f@2496 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

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